that offers installation. Driving a CarBahn-tuned BMW M4 Competition xDrive. Recently, we had the opportunity to drive a BMW M4 Competition xDrive sporting CarBahn’s CB3 Signature Package—a ...

BMW tuner AC Schnitzer revealed its modified BMW M4 at the 2014 Essen motor show. Receiving a new engine map and body modifications, the hardened Beemer gains 78bhp and sits on uprated performance ...

This output is achieved by fitting an upgraded heat exchanger to send cooler water to the power plant’s air-to-water intercooler, as well as revised ECU tuning, a better-flowing titanium exhaust ...

Or, put another way, there’s a hidden potential that can easily be unlocked via a simple software tune. But how much power can be added to a stock BMW M4 without any hardware modifications?

Driving a CarBahn-tuned BMW M4 Competition xDrive. CarBahn's CB3 Signature Package turns the BMW M4 Competition xDrive into a ...

Model Year 2025 BMW 4 Series Gran Coupe Other Trims ... Bring the more powerful xDrive (AWD) version of the M4 to the fight, and the tuned M440i is just 10 horsepower shy, yet overshadows the ...